Keeping it at 15 as long as possible would be good . I also see lot of Death and Decay casts, which is good on this fight as you can get ticks on multiple targets, but make sure you are using only unholy runes for that. Death runes are better spent on Scourge strike (or Festering to extend NP duration).

Keeping it at 15 as long as possible would be good . I also see lot of Death and Decay casts, which is good on this fight as you can get ticks on multiple targets, but make sure you are using only unholy runes for that. Death runes are better spent on Scourge strike (or Festering to extend NP duration).

Unless you have defile Death and decay is no longer worth it unless there are more than 3 adds.